Optical system, camera module, electronic equipment and automobile

A technology of optical system and optical axis, applied in the direction of optics, optical components, vehicle parts, etc.

Inactive Publication Date: 2021-05-25
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an optical

Method used

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  • Optical system, camera module, electronic equipment and automobile
  • Optical system, camera module, electronic equipment and automobile
  • Optical system, camera module, electronic equipment and automobile

Examples

Experimental program
Comparison scheme
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no. 1 example

[0091] refer to figure 1 with figure 2 , the first embodiment provides an optical system 10 with a six-element structure. The optical system 10 sequentially includes a first lens L1 with negative refractive power and a first lens L1 with negative refractive power along the optical axis 101 from the object side to the image side. The second lens L2, the third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. figure 2 It includes the longitudinal spherical aberration diagram, the astigmatism diagram and the distortion diagram of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism diagram and the distortion diagram is 587.56 nm.

[0092] The object side S1 of the first lens L1 is convex, and the image side S2 is concave.

[0093] The object side S3 of the second lens L2 is convex, and the ...

no. 2 example

[0122] refer to image 3 with Figure 4 The optical system 10 in the second embodiment includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, an aperture STO, and a lens with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 has a negative refractive power. Figure 4 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in this embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587.56 nm.

[0123] The object side S1 of the first lens L1 is convex, and the image side S2 is concave.

[0124] The object side S3 of the second lens L2 is convex, and the image side S4 is concave.

[0125] The obje...

no. 3 example

[0139] refer to Figure 5 with Image 6 The optical system 10 in the third embodiment includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, an aperture STO, and a lens with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 has a positive refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 has a negative refractive power. Image 6 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in this embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587.56 nm.

[0140] The object side S1 of the first lens L1 is convex, and the image side S2 is concave.

[0141] The object side S3 of the second lens L2 is convex, and the image side S4 is concave.

[0142] The object...

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Abstract

The invention relates to an optical system, a camera module, electronic equipment and an automobile. The optical system comprises, in order from an object side to an image side: a first lens element with negative refractive power; a second lens element with negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis; a third lens element with positive refractive power having an object-side surface being convex near the optical axis thereof; a fourth lens element with positive refractive power having an object-side surface and an image-side surface being convex near the optical axis; a fifth lens element with positive refractive power having an object-side surface and an image-side surface being convex near the optical axis; a sixth lens element with negative refractive power; the optical system also satisfies the following relation:-9.1 < f1/CT1 <-7; f1 is the effective focal length of the first lens, and CT1 is the thickness of the first lens at the optical axis. The aberration of the optical system can be well corrected, and particularly, the astigmatic aberration can be effectively inhibited, so that good imaging quality can be achieved.

Description

technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module, electronic equipment and an automobile. Background technique [0002] With the development of vehicle equipment, the application of vehicle assistance systems such as ADAS (Advanced Driver Assistance System), DMS (Driver Monitoring System), and CMS (Collision Warning System) in automobiles has been gradually promoted. Generally, the on-vehicle assistance system not only requires the monitoring of the driver's state, such as mental state estimation based on relevant information such as eye state, number of eye closures, eye closure width, yawning, etc., but also monitoring and identification based on the road conditions outside the cab. In this way, a more comprehensive security warning can be provided and prevention can be done in advance. [0003] However, these in-vehicle auxiliary systems generally need to obtain the driver'...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18B60R11/04
CPCB60R11/04B60R2011/004B60R2011/0042G02B13/0045G02B13/06G02B13/18
Inventor 乐宇明蔡雄宇周宝赵迪
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD
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